Pair splitting

When to split every pair in blackjack, against each dealer upcard.

• Splitting A,A
• Splitting 2,2
• Splitting 3,3
• Splitting 4,4
• Splitting 5,5
• Splitting 6,6
• Splitting 7,7
• Splitting 8,8
• Splitting 9,9
• Splitting 10,10